I'm curious about an hybrid indigo 2 with R4400 and Impact framebuffer.I'm working on it now (R4k 200 with solid impact).The machine boot and "chime" (old one) but no post on screen.i have the standard 070-1367-004 EPROM on the mobo.I own the last one (i presume) 070-1367-011 for IP22.Coulid it be my IP22 board that haven't the correct PROM?I'll switch with the later one...And in add, it seem there is no dump of SGI PROM on the net ???I'll take out my eprom burner ...

Last edited by jammaster on Mon Feb 20, 2017 7:35 am, edited 1 time in total.

...Fortunaly no, i haven't got a DIN8 to DB9 converter. (A shame, i'll made one or found one ... Seem to be a sun DIN plug)It's very strange.In all Indigo 2, i presume, the frame buffer post on just before switching the green led (after amber and chime).My working impact post on (blanck screen but synchro) after the last green led...The couple, CPU/ram/mobo seem to be OK... And work like a charm with an old extreme stack.Does my PSU have a too low 5V extrenal rail??? (dawn, i just recaped it with new capacitors)I have try with the last revision V12 dump, but the mobo won't chime (!)... corrupted dump???

yes, i have seen the test fully... the little mardigras logo on bottom left !And the x3 cards i have work perfectly... I am lost at this point !And same thing with my two IP22 mobos... Is it a challenge to have a R4k/imp working? different NVRAM between two configs ?